How Long Should a Reddit Post Be?
For most founder posts, aim for a few short paragraphs, roughly 100 to 300 words. That is long enough to give real context, a problem, what you built, why it matters, and short enough to read comfortably on a phone without scrolling forever. A launch post, a question, or a feedback request all fit comfortably in that range. Only a genuine story or retrospective earns more room than that.
Reddit itself sets hard outer limits, not a recommended length: a post title tops out at 300 characters and cannot be edited after posting, a text post body maxes out at 40,000 characters, and a comment maxes out at 10,000 characters. There is no sitewide minimum, but individual subreddits can enforce their own floor. r/startups, for example, requires submissions of 250 characters or more and removes anything shorter automatically.
TL;DR: the short answer
Most posts: a few short paragraphs, 100 to 300 words. Comments: a few sentences unless someone specifically asked for depth. There is no platform-wide minimum, but Reddit’s hard maximums are 300 characters for a title, 40,000 characters for a text post body, and 10,000 characters for a comment. Check the subreddit’s own rules before you post, since some, like r/startups, set their own minimum on top of Reddit’s defaults.
What Reddit actually enforces
These are the platform’s real character limits, not style advice. Everything below the table is about what actually reads well within them.
| Field | Limit | Note |
|---|---|---|
| Title | 300 characters max | Hard platform cap. The title cannot be edited after the post goes live, so get it right before you submit. |
| Text/self post body | 40,000 characters max | Roughly 6,000 to 7,000 words at the outer edge. The body can be edited after posting, unlike the title. |
| Comment | 10,000 characters max | Applies to both top-level comments and replies, anywhere on the site. |
| Sitewide minimum | None | Reddit itself sets no floor. Individual subreddits can and do set their own minimum via AutoMod. |
| r/startups submission minimum | 250+ characters | One of the few subreddits with a published, enforced minimum. Short posts get auto-removed there. |
A post is either a link post with a URL, or a text/self post with a markdown body, not both. If your post has a URL, that field replaces the body entirely.
Draft it at the right length the first time
Describe your product and the subreddit you are posting in, and get a title under 300 characters and a body sized for that post type, no padding, no guesswork on how much to write.
Title options
The right length depends on what you are posting
“How long should a post be” is really five different questions. Here is a practical target for each common post type founders write.
Enough room to explain the problem, what you built, and why, without turning into a landing page. Most founder launch posts that get read all the way through sit in this band: a hook, some context, the thing you made, and a genuine question at the end.
The question is the point. Enough context that a stranger can answer without guessing your situation, but not so much backstory that the actual question gets buried on the fourth paragraph.
Reviewers need just enough setup to know what they are looking at and what kind of feedback you want, harsh, gentle, specific to one feature. Long preambles before the actual ask lose readers who came to look, not to read.
The one post type where length is earned rather than assumed. A real narrative arc, numbers, a specific mistake, a specific fix, justifies more room, because the length itself is doing work, not padding.
Comments are read in a scroll, not clicked into. A comment answering a direct question in a few sentences gets read. A comment that turns into a second post gets skipped, even at a fraction of the 10,000 character comment limit.
Four reasons Reddit rewards brevity by default
Most of Reddit is read on a phone
A paragraph that looks reasonable on a desktop editor turns into a wall of scrolling on a phone screen. Short paragraphs, three to four sentences at most, are what actually survive the mobile app.
Readers are skimming, not studying
A Reddit feed is a list of competing posts. Someone decides whether to keep reading within the first line or two. A post that takes five paragraphs to state its point loses most of its potential readers before it gets there.
The first line is doing the real work
Whatever is in your opening sentence is effectively your second title. If it is throat-clearing, background, or a disclaimer, you have spent your best real estate on nothing. Lead with the actual hook, not the setup for it.
Length reads as effort, but also as risk
A short, tight post reads as confident. A long one can read as either a real story worth the time, or as someone padding to sound more legitimate. Length only helps when every added paragraph is carrying new information.
Reddit's weekly active user base, the full pool a single post can reach if it stays easy to read and worth finishing on the way through a scrolling feed.
View the Reddit usage data (Business of Apps)A long post is not automatically a bad post
Short is the safe default, not a rule without exceptions. These are the situations where extra length is doing real work instead of padding the post.
You are telling a specific story with a real arc: what happened, what you tried, what changed, with actual numbers or dates attached, not a general opinion.
You are answering a technical or how-to question where the value is in the steps themselves, and cutting it short would leave the answer incomplete.
The subreddit's own culture rewards long-form writeups, which you can confirm by sorting Top of the subreddit and checking whether the highest-scoring posts are long or short.
You are responding to a specific request for detail, someone asked you to explain your reasoning, your stack, or your numbers, and a short answer would read as evasive.
You are posting a genuine AMA-style answer thread, where depth is the entire point of the format.
The length mistakes that cost the most reads
Padding to look more serious
Adding paragraphs of preamble, mission statement, or backstory before getting to the point does not make a post look more credible. It makes the actual point harder to find, and costs you the skim-read.
Compressing a real story into two sentences
The opposite mistake. A genuine retrospective or postmortem that gets cut down to a headline and a link loses the exact detail that made it worth reading in the first place. Some post types earn their length.
One giant unbroken paragraph
This is a formatting problem more than a length problem, but the two compound. A 300-word post in one block reads longer than a 300-word post split into four short paragraphs, and it is more likely to be scrolled past unread.
Writing the comment like a second post
A comment that restates the whole pitch, with headers and multiple paragraphs, reads as spam even when it answers a real question. Keep replies to a few sentences unless someone is asking for real depth.
Ignoring a subreddit's stated minimum
A handful of subreddits, r/startups among them, enforce a minimum character count through AutoMod and will remove a submission automatically if it falls short, no matter how good the two sentences you wrote actually are.
The same word count can read as short or long
Character count is not what a reader actually experiences. How you break the text up matters as much as how much of it there is. See how to format a Reddit post for the full breakdown of paragraph breaks, line spacing, and markdown on Reddit.
A 250-word post written as a single unbroken paragraph reads as dense and long before anyone gets to the first sentence. On a phone, it can fill the entire visible screen with no visual break.
The identical 250 words split into three short paragraphs with a blank line between each reads as short and easy, even though the character count has not changed at all. Formatting is what makes length feel long or short, not the count itself.
A block of specs or a short list reads faster as three bullet lines than as a sentence stitched together with commas. It also breaks up the page visually, which matters more than the raw character total.
If you only remember three lines
Default to a few short paragraphs. Roughly 100 to 300 words covers most launch, question, and feedback posts without losing the skim-read.
Know the hard caps. 300 characters for a title, 40,000 for a text post body, 10,000 for a comment. No sitewide minimum, but some subreddits, like r/startups at 250 characters, set their own.
Let the story earn its length. A retrospective with real numbers and a real arc can run long. Everything else should be tight.
Quick self-check
Probably the right length
You can read the whole thing out loud in under a minute, the first sentence states the point, and every paragraph is three to four sentences or shorter.
Probably needs a trim
The first paragraph is backstory, the actual point does not show up until paragraph three, or there is a single block of text with no line breaks at all.
Reddit post length, answered
What is the maximum length for a Reddit post title?
300 characters. That is a hard platform limit, and the title cannot be edited after the post goes live, so it is worth getting right before you submit rather than fixing it after.
What is the maximum length for a Reddit text post?
40,000 characters for the body of a text/self post, roughly 6,000 to 7,000 words at the outer edge. Unlike the title, the body can be edited after posting.
Is there a minimum length for a Reddit post?
Not sitewide. Reddit itself sets no minimum. Individual subreddits can and do enforce their own minimum through AutoMod, and r/startups is a clear example, requiring submissions of 250 characters or more and removing shorter ones automatically.
How long should a comment be on Reddit?
Most comments read best at a few sentences, even though the platform allows up to 10,000 characters for any comment or reply. A comment that turns into a second post, with headers and multiple paragraphs, tends to read as spam rather than a genuine reply, even when it answers a real question.
Is a short Reddit post less likely to get engagement than a long one?
Not by default. Most of Reddit is read on mobile in a scrolling feed, so a short post that states its point in the first line and stays readable often gets more engagement than a long one, simply because more people finish reading it. Length only helps when a post has a real story that justifies it.
How long should a product launch post be on Reddit?
Roughly 150 to 300 words across 3 to 5 short paragraphs works for most founder launch posts. That is enough room to explain the problem, what you built, and why, without turning the post into a landing page.
Does formatting affect how long a Reddit post feels, even at the same word count?
Yes, significantly. The same 250 words written as one unbroken block reads as dense and long, while the identical text split into short paragraphs with breaks between them reads as short and easy. See how to format a Reddit post for the full breakdown of paragraph breaks and markdown.
Do all subreddits enforce the same length rules?
No. Reddit's platform limits, the 300-character title cap, the 40,000-character body cap, and the 10,000-character comment cap, apply everywhere. But individual subreddits can add their own minimum on top of that, so it is worth checking a specific subreddit's rules before assuming the platform defaults are the only constraint.